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  2. Heterogram (literature) - Wikipedia

    en.wikipedia.org/wiki/Heterogram_(literature)

    A heterogram (from hetero-, meaning 'different', + -gram, meaning 'written') is a word, phrase, or sentence in which no letter of the alphabet occurs more than once. The terms isogram and nonpattern word have also been used to mean the same thing. [1] [2] [3] It is not clear who coined or popularized the term "heterogram".

  3. Letter frequency - Wikipedia

    en.wikipedia.org/wiki/Letter_frequency

    The California Job Case was a compartmentalized box for printing in the 19th century, sizes corresponding to the commonality of letters. The frequency of letters in text has been studied for use in cryptanalysis, and frequency analysis in particular, dating back to the Arab mathematician al-Kindi (c. AD 801–873 ), who formally developed the method (the ciphers breakable by this technique go ...

  4. Hangman (game) - Wikipedia

    en.wikipedia.org/wiki/Hangman_(game)

    Example game in which the letters A and N but not the whole word HANGMAN were guessed – incorrect guesses are noted at the bottom Hangman is a guessing game for two or more players. One player thinks of a word , phrase , or sentence and the other(s) tries to guess it by suggesting letters or numbers within a certain number of guesses.

  5. Comparison of code generation tools - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_code...

    Well-formed output language code fragments Any programming language (proven for C, C++, Java, C#, PHP, COBOL) gSOAP: C / C++ WSDL specifications C / C++ code that can be used to communicate with WebServices. XML with the definitions obtained. Microsoft Visual Studio LightSwitch: C# / VB.NET Active Tier Database schema

  6. Büchi automaton - Wikipedia

    en.wikipedia.org/wiki/Büchi_automaton

    Proof: Suppose there is a word w ∈ L(A) ∩ L f (L g) ω, otherwise the theorem holds trivially. Let r be an accepting run of A over input w. We need to show that each word w' ∈ L f (L g) ω is also in L(A), i.e., there exists a run r' of A over input w' such that a state in F occurs in r' infinitely often.

  7. Frequency analysis - Wikipedia

    en.wikipedia.org/wiki/Frequency_analysis

    Eve could use frequency analysis to help solve the message along the following lines: counts of the letters in the cryptogram show that I is the most common single letter, [2] XL most common bigram, and XLI is the most common trigram. e is the most common letter in the English language, th is the most common bigram, and the is the

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  9. Longest repeated substring problem - Wikipedia

    en.wikipedia.org/wiki/Longest_repeated_substring...

    A suffix tree of the letters ATCGATCGA$ In computer science, the longest repeated substring problem is the problem of finding the longest substring of a string that occurs at least twice.